COL6A3 promotes cellular malignancy of osteosarcoma by activating the PI3K/AKT pathway

SUMMARY OBJECTIVE In this study, we aimed to investigate the role of COL6A3 on cell motility and the PI3K/AKT signaling pathway in osteosarcoma. METHODS The relative expression of COL6A3 was achieved from a GEO dataset in osteosarcoma tissue. siRNA technology was applied to decrease the COL6A3 expression in cells, and cell counting kit-8 (CCK-8) assay and colony formation analysis were used to examine the cell proliferation potential. Knockdown COL6A3 made the proliferation and colony formation abilities worse than the COL6A3 without interference. Likewise, in contrast to the si-con group, cell invasion and migration were inhibited in the si-COL6A3 group. Moreover, the western blot results suggested that the PI3K/AKT signaling pathway was manipulated by measuring the protein expression of the PI3K/AKT pathway-related markers, due to the COL6A3 inhibition. CONCLUSION COL6A3 plays a crucial role in modulating various aspects of the progression of osteosarcoma, which would provide a potentially effective treatment for osteosarcoma.

RESUMO OBJETIVO Neste estudo, investigamos a função do COL6A3 na mobilidade celular e na via PI3K/AKT em osteossarcomas. METODOLOGIA A expressão relativa do COL6A3 foi obtida a partir de dados GEO em tecidos de osteossarcoma. O RNA de interferência (siRNA) foi utilizado para reduzir a expressão do COL6A3 nas células, e o teste de contagem de células kit-8 (CCK-8) e a análise de formação de colônias foram realizados para examinar o potencial de proliferação celular. Além disso, o Transwell comprovou os efeitos do si-COL6A3 na invasão celular e migração em células de osteossarcoma. Para medir os níveis de expressão das proteínas e mRNAs, utilizamos transcriptase reversa quantitativa (qRT-PCR) e western blot. RESULTADOS O COL6A3 foi regulado nos tecidos e células do osteossarcoma quando comparado com o controle normal. A redução de COL6A3 reduziu a proliferação e a capacidades de formação de colônias em relação ao COL6A3 sem interferência. Do Mesmo modo, ao contrário do observado no grupo si-con, a invasão e migração celular foram inibidas no grupo si-COL6A3. Além disso, o resultado do western blot sugere que a via PI3K/AKT foi manipulada, medindo a expressão proteica dos marcadores relacionados à PI3K/AKT, devido à inibição do COL6A3. CONCLUSÃO O COL6A3 desempenha um papel crucial na modulação de vários aspectos da progressão do osteossarcoma, o que pode representar um possível tratamento eficaz para a doença.

Effect of electroacupuncture at Wnt/β-catenin signaling pathway on inhibiting cartilage degeneration in rats with knee osteoarthritis / 中国针灸

OBJECTIVE@#To explore the action mechanism of electroacupuncture (EA) for knee osteoarthritis (KOA) based on Wnt/beta-catenin (Wnt/β-catenin) signaling pathway.@*METHODS@#Ten rats were randomly selected into a sham-operation group among 50 male 2-month-old SD rats, and the KOA model was established in the remaining 40 rats by modified Hulth method. Four weeks after the model establishment, the rats were randomly divided into a model group, an experimental A group, an experimental B group and an experimental C group, 10 rats in each group. The rats in the sham-operation group and model group did not receive any intervention. The rats in the experimental A group were treated with EA at "Neixiyan" (EX-LE 4) and "Dubi"(ST 35) for 15 min. The rats in the experimental B group were treated with EA at "Neixiyan" (EX-LE 4) and "Dubi"(ST 35) for 30 min. The rats in the experimental C group were treated with EA at non-acupoint for 15 min. EA intervention was given once a day, five times a week, and totally 12-week treatment was given. After 12 weeks, the knee cartilage tissues were stained and the morphological changes were observed under light microscopy; the severity of cartilage degeneration was evaluated by modified Mankin's score; the content of interleukin-1β (IL-1β) in synovium tissues was detected by ELISA method; the content of Wnt-4, β-catenin and matrix metalloprotein-13 (MMP-13) in cartilage tissues was detected by Western blot method.@*RESULTS@#Compared with the sham-operation group, in the model group the morphology and structure of cartilage were disordered, the number of cells was significantly reduced, the matrix was decontaminated and tidal line was incomplete; the Mankin's score was significantly increased (0.05).@*CONCLUSION@#EA at "Neixiyan" (EX-LE 4) and "Dubi"(ST 35) may reduce the expression of MMP-13 and the production of inflammatory factor IL-1β through Wnt/β-catenin signaling pathway, thus inhibit the degradation of cartilage matrix and the apoptosis of chondrocyte, and improve the morphology and structure of cartilage.

Magnetic resonance imaging characteristics of unilateral versus bilateral intraplaque hemorrhage in patients with carotid atherosclerotic plaques / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the difference in the vulnerability of carotid atherosclerotic plaques in patients with unilateral and bilateral intraplaque hemorrhage (IPH).</p><p><b>METHODS</b>A retrospective analysis was conducted among 44 patients with unilateral IPH (30 cases) or bilateral IPH (14 cases) in the carotid plaques detected by magnetic resonance imaging (MRI) in our hospital between December, 2009 and December, 2012. The age, maximum wall thickness and incidence of fibrous cap rupture were compared between the two groups.</p><p><b>RESULTS</b>Compared with those with unilateral IPH, the patients with bilateral IPHs had a significantly younger age (66.6∓9.4 years vs 73.7∓9.0 years, P=0.027), a significantly greater maximum plaque thickness (6.3∓1.9 mm vs 5.0∓1.3 mm, P=0.035) and a higher incidence of ulcers (50% vs 13.3%, P=0.025). Logistic regression analysis revealed a significant association between bilateral IPHs and the occurrence of ulcer with an odd ratio (OR) of 6.5 (95% confidence interval [CI]: 1.5-28.7, P=0.014). After adjustment for gender in Model 1, bilateral IPHs were still significantly associated with presence of ulcer (OR=5.7, 95%CI: 1.1-29.2, P=0.036). But after adjustment for age (P=0.131) or maximum plaque thickness (P=0.139) in model 2, no significant correlation was found between bilateral IPHs and the presence of ulcer.</p><p><b>CONCLUSION</b>Compared with patients with unilateral IPH, those with bilateral IPHs are at a younger age and have a greater plaque burden and a higher incidence of fibrous cap rupture, suggesting a greater vulnerability of the carotid plaques in patients with bilateral IPHs.</p>

Role of sul2 Gene Linked to Transposase in Resistance to Trimethoprim/Sulfamethoxazole Among Stenotrophomonas maltophilia Isolates

No abstract available.

Neovascularization in the carotid atherosclerotic plaque is not associated with inflammatory cell aggregation / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Monocytes and macrophages in atherosclerotic plaque lead to plaque instability. The aim of the study was to determine if plaque neovascularization led to inflammation.</p><p><b>METHODS</b>Patients were consecutively enrolled if their carotid intimal media thickness was > 2 mm, as revealed by duplex ultrasound. The patients then underwent dynamic contrast enhanced magnetic resonance imaging (DCE MRI) and fluorine-18 fluorodeoxyglucose ((18)F-FDG) positron emission tomography combined with computed tomography (PET CT). A target to background ratio (TBR) of ≥ 1.25 or < 1.25 served as the cutoff point for the presence and absence of inflammation, respectively.</p><p><b>RESULTS</b>Twenty-six patients underwent bilateral carotid DCE MRI and 24 patients also underwent PET CT. One hundred and fifty-five plaques were evaluated by both DCE MRI and PET CT. There was no significant difference in plaque morphology between the TBR ≥ 1.25 (n = 61) and TBR < 1.25 (n = 94) groups. No significant differences were found in plasma volume and transfer constant between the TBR ≥ 1.25 and TBR < 1.25 groups.</p><p><b>CONCLUSION</b>Our study did not find a significant correlation between plaque neovascularization and the aggregation of inflammatory cells.</p>

Effect of water extracts from duhuo jisheng decoction on expression of chondrocyte G1 phase regulator mRNA / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the effect of water extracts from Duhuo Jisheng decoction on chondrocyte G1 phase.</p><p><b>METHODS</b>Chondrocytes were collected from four-week-old SD rats to establish the chondrocyte in vitro culture system. The third generation of chondrocytes was intervened. MTT method was used to measure the effect of water extracts from different concentrations of Duhuo Jisheng decoction on chondrocyte activity. The expressions of Chondrocyte Cyclin D1, CDK4, CDK6 and P21 mRNA in the blank group and low, middle and high-dose groups (100, 200, 400 mg x L(-1)) were detected by RT-PCR method.</p><p><b>RESULT</b>The MTT assay showed that the chondrocyte activity significantly increased within specific drug concentrations (50-800 mg x L(-1)) (P < 0.01); After the intervention for 24 h, the expressions of CyclinD1, CDK4 and CDK6 mRNA in all dose groups notably increased (P < 0.05), with the maximum expressions at the concentration of 200 mg x L(-1); The expression of P21 mRNA decreased, particularly at the concentration of 200 mg x L(-1) (P < 0.01).</p><p><b>CONCLUSION</b>Water extracts from Duhuo Jisheng decoction can promote chondrocyte proliferation by effecting the expression of chondrocyte G1 phase regulator mRNA.</p>

The effects of mild stress to gastrointestinal motility and oxytocin in hypothalamic paraventricular nucleus of rats / 中华行为医学与脑科学杂志

Objective To study the changes of gastrointestinal movement function in rats with chronic unpredictable mild stress(CUMS) and explore the mechanisms underlying it.Methods The rats were divided into stress model group and control group.The stress model rats were induced by 21-day chronic unpredictable mild stress as well as social-isolated fed.The rate of ink propulsion of gastrointestinal tract and the contraction of intestinal canal in rats were observed.Immunohistochemistry was adopted to detect the expression of OT in rats.Results (1) After the models were induced,weight-gain and sucrose preference of model group ((69.97 ± 9.81) g,(49.05± 5.98) g) were lower than those in control group ((116.27 ± 13.60) g,(83.51 ± 3.08) g) (P ＜ 0.001),and both the crossing-score and rearing-score ((24.00 ± 13.52),(3.90 ± 2.51)) were lower than those in control group ((53.60 ± 27.98),(11.50 ± 8.85)) in the open-field test.(2) The rate of ink propulsion of model group ((67.33 ± 6.24) ％) was decreased when compared to the control group ((76.83 ± 10.00) ％) (P ＜ 0.05),and the intestinal canal contraction amplitude and contraction frequency ((1.37 ± 0.18) g,(0.58 ± 0.02) S-1) were lower than those in control group ((1.88 ± 0.13) g),(0.62 ± 0.04) S-1) (P ＜ 0.05).(3) Compared with the control group (6.07 ± 3.71),OT immunoreactive substance was increased in model group (59.17 ± 16.08) of rats (P＜0.001).Conclusion Chronic stress can cause the decrease in gastrointestinal movement function of rats.These changes may be related to the increased expression of OT in paraventricular nucleus.

Clinical observation of warm needling therapy for treating knee osteoarthritis of different Chinese medical syndrome types / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To observe the difference in the therapeutic efficacy of warm needling therapy on knee osteoarthritis (KOA) patients of different Chinese medical syndrome types.</p><p><b>METHODS</b>Totally 197 KOA outpatients [including wind-cold-damp retention syndrome (50 cases, 61 knees), yang deficiency cold coagulation syndrome (48 cases, 58 knees), stagnation of blood stasis syndrome (49 cases, 63 knees), and insufficiency of Shen-essence syndrome (50 cases, 66 knees)] were treated with warm needling therapy, 10 days as one therapeutic course, 3 courses in total. The symptom score and changes of clinical efficacy were assessed. The contents of interleukin-1 (IL-1), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-alpha) in the synovial fluid were determined before and after treatment.</p><p><b>RESULTS</b>The symptom scores and the clinical efficacy were improved in all syndrome groups after treatment (P < 0.05), with the best effects shown in the yang deficiency cold coagulation syndrome (P < 0.05) and the worst effects shown in the stagnation of blood stasis syndrome (P < 0.05). The contents of IL-1, IL-6, and TNF-alpha in the synovial fluid decreased after treatment in all syndrome groups (P < 0.05), with the best effects shown in the yang deficiency cold coagulation syndrome (P < 0.05).</p><p><b>CONCLUSION</b>Warm needling therapy had favorable therapeutic effects on KOA patients of wind-cold-damp retention syndrome, yang deficiency cold coagulation syndrome, and insufficiency of Shen-essence syndrome, with the best effects shown on KOA patients of yang deficiency cold coagulation syndrome.</p>

Experimental study on the suppression of sodium nitroprussiate-induced chondrocyte apoptosis by Tougu Xiaotong Capsule (透骨消痛胶囊)-containing serum / 中国结合医学杂志

<p><b>OBJECTIVE</b>To study the mechanism of action of Tougu Xiaotong Capsule (透骨消痛胶囊, TGXTC) ex vivo in suppressing chondrocyte (CD) apoptosis induced by sodium nitroprussiate (SNP).</p><p><b>METHODS</b>Thirty New Zealand rabbits, 2 months old, were randomized by lottery into five groups, six in each: the blank group treated with saline, the positive control group treated with Zhuanggu Guanjie Pill (壮骨关节丸, 70 mg/kg), and the three experimental groups, EGA, EGB, and EGC, treated with low dose (35 mg/kg), moderate dose (70 mg/kg), and high dose (140 mg/kg) of TGXTC, respectively. All treatments were administered via gastrogavage twice a day for 3 days. Arterial blood was collected from the abdominal aorta and drug or drug metabolites-containing serum was prepared. CDs obtained from knee joints of 16 four-week-old New Zealand rabbits were cultured to the third passage and confirmed by toluidine blue staining. SNP of various final concentrations (0, 0.5, 1.0, and 2.0 mmol/L) was used to induce CD apoptosis, and the dosage-effect relationship of SNP in inducing CD apoptosis was determined. Serum samples from the blank, control, and three dosages of TGXTC-treated rabbits were tested in the CD culture in the presence of SNP. Cell apoptosis was determined by Hoechst 33342 staining, viability of CDs was quantified by MTT, CD apoptosis rate was determined by annexin V-FITC/PI staining, levels of p53 and Bcl-2 mRNA expression in CDs were determined with RT-PCR, and contents of caspase-3 and caspase-9 proteins were determined by colorimetry.</p><p><b>RESULTS</b>CD apoptosis was induced by SNP at all concentrations tested and in a dose-dependent manner. The SNP concentration of 1 mmol/L and treatment duration of 24 h appeared to be optimal and were selected for the study. Serum samples from the positive control rabbits and from the two higher doses of TGXTC-treated rabbits showed reduction of SNP-induced CD apoptosis, decrease in p53 mRNA expression, inhibition of catalytic activities of caspase-3 and caspase-9, and increase in Bcl-2 mRNA expression when compared with the serum from the blank group (P<0.05).</p><p><b>CONCLUSION</b>TGXTC-containing sera antagonized SNP-induced CD apoptosis and the molecular basis for the action was associated with up-regulation of Bcl-2, down-regulation of p53 expression, and inhibition of caspase-3 and caspase-9 catalytic activities.</p>

Clinical study on the treatment of knee osteoarthritis of Shen-Sui insufficiency syndrome type by electroacupuncture / 中国结合医学杂志

<p><b>OBJECTIVE</b>To study the clinical effificacy of electroacupuncture (EA) on treating knee osteoarthritis (KOA) of Shen ()-Sui () insuffificiency (SSI) syndrome type.</p><p><b>METHODS</b>A total of 245 patients (279 knees) of KOA-SSI were randomly assigned to two groups by lottery: 141 knees in the treatment group and 138 knees in the control group. The treatment group was managed with EA at the dominant points of Neixiyan (Ex-LE4) and Waixiyan (Ex-LE5) as well as the conjugate points of Xuanzhong (GB39) and Taixi (KI3) for 30 min, once a day, with 15 days as one course; 2 courses were applied with a 5-day interval in between. The control group was treated with intra-articular injection of 2 mL hyaluronic acid into the affected joint every 7 days for 5 times in total. The clinical effects on the patients in different stages were observed, and their symptom scores of knee and contents of cytokines, including interleukin-1 (IL-1), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-alpha), prostaglandin E(2alpha) (PGE(2alpha)) and matrix metalloproteinases-3 (MMP-3), in the knee joint fluid were measured before and after treatment.</p><p><b>RESULTS</b>The study was completed in 235 patients (263 knees); four patients (7 knees) in the treatment group and six patients (9 knees) in the control group dropped out. Comparison of therapeutic effects (excellent and effective rates) between the two groups showed insignificant differences (P>0.05). Symptom scores of knee and contents of cytokines in the knee flfluid after treatment were lowered signifificantly in the patients of stage I-III in both groups (P<0.05 or P<0.01). However, the lowering of the total symptom score of knee in the patients of stage III in the treatment group was more signifificant (P<0.05).</p><p><b>CONCLUSIONS</b>EA could effectively alleviate the clinical symptoms in KOA patients of stage III, showing an effect superior to that of hyaluronic acid. EA also shows action in suppressing the secretion of IL-1, IL-6, TNF-alpha, PGE(2alpha) and MMP-3 in the knee flfluid.</p>

Effect of OA kneepad on apoptosis genes Bcl-2 and p53 expression in articular cartilage cells of experimental knee osteoarthritis / 中国骨伤

<p><b>OBJECTIVE</b>To study the effects of kneepad on expression of Bcl-2 and p53 mRNA of chondrocyte in white rabbits with knee osteoarthritis, so as to explore and treatment mechanism of OA kneepad on apoptosis of chondrocytes of rabbits with knee osteoarthritis in molecular degree.</p><p><b>METHODS</b>Forty-four Japanese healthy 6-month-old rabbits (equal male and female,the weight ranging from 2 to 2.2 kg) were used to establish knee osteoarthritis models by modified Hulth method. The rabbits were randomly divided into 6 groups: normal group, model group, control group (microwave), experimental group 1 (electricity), experimental group 2 (thermal), experimental group 3 (kneepad). Ten rabbits in the normal group were breed with conventional method; 9 rabbits in the model group were breed with conventional method after model made; 9 rabbits in the control group were treated with microwave for 30 minutes, one time daily; 9 rabbits in the experimental group 1 were treated with electricity (density wave) for 30 minutes,one time daily;8 rabbits in the experimental group 2 were treated with hot (hot soft membrane) for 30 minutes, one time daily; 9 rabbits in the experiment group 3 were treated with electrothermal (OA knee pad) for 30 minutes, one time daily. All the rabbits were treated for 16 weeks and then sacrificed. The expressions of Bcl-2 and p53 mRNA of chondrocytes in knee joint were detected by using fluorescence quantitative RT-PCR method.</p><p><b>RESULTS</b>At the 16 hthek,th e OD260/OD280 value range of total RNA extracted from rabbit articular cartilage tissue in each group were all at 1.80 to 2.00,wh ich indicates high RNA purity. The p53 relative mRNA in articular cartilage cells of model group,th e control group,th e experimental group 1 ,r oup 2,gr oup 3 were overexpressed,an d Belc2 mRNA expression levels of articular cartilage cells were low expression,an d compared with the normal group there were significant differences (P < 0.01). Belc2, p53 mRNA expression in articular cartilage cells,th ere were significant differences (P < 0.01) between the control group, experimental group 1, group 2, group 3 and model group. The results between the control group, experimental group 1 ,group 2 and group 3 had significant differences (P < 0.01).</p><p><b>CONCLUSION</b>OA-kneepad can up-regulate the mRNA expression of Bcl-2 as well as down-regulate the mRNA expression of p53, thereby to inhibit the apoptosis of cartilage cells and delay the degeneration of articular cartilage changes.</p>

Research on mechanism of Tougu Xiaotong Granule in preventing and treating knee osteoarthritis / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To investigate the mechanism of Tougu Xiaotong Granula (TXG) on prevention and treatment of knee osteoarthritis.</p><p><b>METHODS</b>Fifty New Zealand rabbits were randomly divided into 6 groups. Except those in the normal control group, all the rabbits were replicated into knee osteoarthritis model using modified Hulth method. They were administered by gastrogavage once every day respectively with 100 ml of normal saline to the rabbits in the normal group and those in the model group, with 10 g of Zhuanggu Guanjie Pill to those in the control group, and 5 g, 10 g and 20 g of TXG to those in the three TXG tested groups (tested group 1, 2 and 3). The levels of interleukin-1 (IL-1), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-alpha) and metalloproteinase 3 (MMP-3) in joint fluid, the blood content of malondialdehyde (MDA) and nitric oxide (NO) absorbance as well as the SOD activity in synovia were observed.</p><p><b>RESULTS</b>Overexpressions of IL-1, IL-6, TNF-alpha and MMP-3 in joint fluid, increased blood content of NO and MDA were shown in the 8th and 16th week, and decreased SOD activity in synovia was shown in the 16th week of the experiment in all the model rabbits, as compared to those in the normal group, the difference was significant respectively (P < 0.05 or P<0.01). After 8 weeks of treatment, the levels of IL-1, TNF-alpha, MMP-3, NO and MDA in the control group, tested group 2 and 3 were significantly different to those in the model group respectively (P < 0.05, P < 0.01), and significant difference was also shown in the comparisons of those indexes between the control group and the tested group 1 vs the tested group 3 (P < 0.05). As for the level of IL-6, significant difference was shown in comparisons of the model group with the control group, tested group 2 and 3 in the 8th and 16th week of the treatment (P < 0.05 or P < 0.01), also in comparison of the tested group 3 with the tested group 1 in the 8th week, and in that of the tested group 2 with the control group and the tested group 1 in the 16th week (P < 0.05).</p><p><b>CONCLUSION</b>TXG could effectively postpone the degeneration of cartilage through effectively inhibiting the biological effects of cytokines, MMP-3 and oxygen free radical.</p>

Exploration on the increased sensitivity to docetaxel and reversing mechanism of drug resistance of antisense survivin RNA in gastric cancer cell line SGC7901 cells / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To explore the effects of survivin antisense RNA on apoptosis and chemosensitivity to docetaxel in gastric cancer line SGC7901 cells, and its relation to mdr-1.</p><p><b>METHODS</b>survivin antisense eukaryotic vector anti-pcDNA3-svv was transfected into SGC7901 cells by electorporation and positive clone was screened out. survivin protein and mdr-1 mRNA were determined by Western blot and RT-PCR. Apoptosis-inducing effect was examined by electron microscopy. Sensitivity to docetaxel was examined by MTT. Expression of mdr-1 and survivin mRNA were detected in the SGC7901 cells after drug-resisitance induction.</p><p><b>RESULTS</b>The expression of survivin protein of SGC7901 cells after transfection reduced significantly than that of non-transfected cells. MDR indexes of transfection group and non-transfection group were 0.196 +/- 0.013 and 3.126 +/- 0.019, respectively. The IC50 of transfection group to docetaxel was (16.7 +/- 1.98) microg/L and non-transfection group was (55.7 +/- 1. 89) microg/L, with a statistically significant difference. Expression of survivin mRNA in drug-resistant cells decreased along with the decreasing of mdr-1.</p><p><b>CONCLUSION</b>Antisense surivivin RNA can induce apoptosis in gastric cancer cells and increase sensitivity to docetaxel. The reversing mechanism of drug resistance is related with decreasing of mdr-1.</p>

Intraluminal enucleation in transurethral vaporization and electro-resection of the prostate / 中国基层医药

Objective To investigate the clinical efficacy of intraluminal enucleation in transurethrat vapor- ization and electro-reesection of the prostate.Methods A retrospective analysis was reviewed in 62 case of prostatic hypertrophy,which were treated with intraluminal enucleation in vaporization of prostate.All pacients had a sucessful operation.There were 12 case in unipolar vaporization and 50 in plasmakenitic bipolar vaporization.Results Opera- tion time ranged from 50 to 162 minutes,with an average of 76min.Bleeding ranged from 40 to 200 ml,with an av- erage of 110ml.There was no blood transfusion.The weight of prostate was 62～138g,the catheter was maintained for 3～5 days postoperatively.The hospital stay was 7～10 days,average 8 days.All patients were cured.There was a fllow-up for 1～20 months,with an average of 8 months.The IPSS decreased by 22 points on average,and peak urine flow(Qmax)increasd to(16.8?3.3)ml/s.There wre no urethralstricture,permanent urinary incontinence, TURS,postoperative hemorrhage,retrograde ejaculation and recurrence.Conclusions Intraluminal enucleation in treatment of prostalic hypertroply is a new,safe,and effective method,which should be popularized in clinical prac- tice.

Experimental study on replicating knee osteoarthritis by modified Hulth's modeling method / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To explore the method of replicating experimental animal model of knee osteoarthritis.</p><p><b>METHODS</b>Knee osteoarthritis was replicated by modified Hulth's modeling method. X-ray photographic and transmission electron microscopic examination, test of the joint synovial fluid of the modeled joint were performed, and serum contents of malondialdehyde (MDA) and nitric oxide (NO) in blood were measured.</p><p><b>RESULTS</b>(1) In the normal control group, the articular surface is smooth and glossy, with intact cells and cellular membrane. In the model group, the medial space of the knee joint became obvious narrowed with rough and deformed articular surface and osteophytes, as well as the atrophic chondrocytes with pyknotic cell nucleus and broken cellular membrane. (2) Eight weeks and 16 weeks after modeling, in the model group, the contents of interleukin-1 (IL-1), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-alpha) and matrix metalloproteinase-3 (MMP-3) in synovial fluid and the levels of serum MDA and NO were obviously raised, and the activity of superoxide dismutase (SOD) in synovial membrane was obviously lowered 16 weeks after modeling, showing significant difference when compared with those in the normal control group (P < 0.01).</p><p><b>CONCLUSION</b>Modified Hulth's modeling method in replicating knee osteoarthritis is simple in manipulation with less wound, and the condition of modeled knee joint could be maintained stable to certain degree, which is advantageous to the success of animal model replicating.</p>

Evaluation of coronary artery in-stent restenosis using 64-slice CT / 中华放射学杂志

Objective To evaluate the accuracy of 64-slice CT in the diagnosis of coronary in-stent restenosis (ISR).Methods Fourteen patients with 37 implanted coronary stents were examined by both 64-slice CT angiography (CTA) and conventional coronary angiography(CCA).The diagnosis of ISR was evaluated by two methods(visual inspection and the measurement of the in-stent contrast attenuation)on CTA.The accuracy of the two methods in the diagnosis of ISR was compared with reference to CCA.Results ISR(＞50%)was found on CCA in 11 stents.CTA with visual inspection and with measurement of in-stent CT attenuation correctly detected ISR in 2 and 3 stents respectively with reference to CCA.The sensitivity, specificity,positive predictive value and negative predicitive value of the two methods were 18%,69%, 20%,67% and 27%,81%,38%,72%,respectively.There was no significant difference (P＞0.05) between the accuracy of two methods.Conclusion The ISR was very difficult to diagnose by 64 slice CT, but the high specificity of 64-slice CT study implied an important role in excluding ISR.